JP5197144B2 - Side handle for impact tool and impact tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve ease of use of a side handle for an impact tool by adjusting its position in the direction of impact axis. <P>SOLUTION: This side handle 1 for the impact tool is provided with: a mounting part 2 mounted in a body T of a hammer drill; and a handle part 4 connected with the mounting part 2 and having an L-shaped grip 16. The handle part 4 is connected with the mounting part 2, centered on a bolt 3 in the tangential direction of the body T crossing an impact axis orthogonally, and to rotate and be fixed in any rotation position. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an impact tool side handle mounted on an impact tool such as a hammer drill or a hammer, and an impact tool including the side handle.

In an impact tool such as a hammer drill, a main handle is provided at the rear of a main body on which a bit is mounted at a front end, and a side handle is provided at a front portion of the main body. This side handle is often used in the form of a mounting portion mounted on the main body, and a handle portion that is connected to the mounting portion and protrudes from the mounting portion on a surface orthogonal to the hitting shaft of the main body and has a grip. ing. By grasping the grip, the front portion of the main body can be supported.
However, in this side handle, since the grip can only change the protruding direction around the axis of the main body, it is not easy to use during the chiseling operation. This is because the operation is performed while pushing the main body forward, so that the side handle is easier to operate if it is parallel to the main handle on the side of the main body. Therefore, in Patent Document 1, the member that connects the side handle fixing portion and the grip attached to the main body is provided with a hinge that can adjust and fix the position of the grip on the surface orthogonal to the striking shaft, thereby providing a grip. A side handle is disclosed that is fixed at an arbitrary position on the surface and positioned on the side of the main body to improve operability.

Utility Model Registration No. 2571295

  However, the side handle of Patent Document 1 has a structure that can rotate and adjust the position only on the surface orthogonal to the striking axis, and cannot adjust the position in the striking axis direction. Therefore, the support position in the front-rear direction with respect to the main body is constant, and it has not been able to sufficiently cope with the work form, the operator's preference, and the like. Also, when working in drill mode with a hammer drill attached, the reaction force around the axis that is applied to the body as the bit rotates is applied to the side handle, so the side handle may loosen and rotate accidentally. is there.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a striking tool side handle and a striking tool that can be adjusted in the direction of the striking axis and have excellent usability and high reliability when mounted.

In order to achieve the above object, the invention described in claim 1 is directed to a mounting portion that is mounted on a main body of a hitting tool that includes a hitting mechanism, and a surface that is connected to the mounting portion and is orthogonal to the hitting axis of the main body. A striking tool side handle that protrudes from the mounting portion and includes a handle portion having a grip, the handle portion being rotatable about the tangential axis of the main body perpendicular to the striking axis to the mounting portion; and fixably connected in any rotational position, the handle portion is provided with a vibration isolating mechanism for reducing the vibration transmitted to the handle portion from the mounting portion, among the connecting portion between the mounting portion of the handle portion is coupled to the mounting portion A cylinder and an outer cylinder that is coaxially mounted on the inner cylinder and is provided with a grip on the outer periphery are divided into a cylinder and an anti-vibration mechanism is formed in the axial direction on the outer surface of the inner cylinder and the inner surface of the outer cylinder, respectively. Between the groove and the groove in the inner cylinder and the groove in the outer cylinder It is characterized in that it has formed from the shaft-like elastic body is fitted me.
The invention according to claim 2 is characterized in that, in the configuration of claim 1, an omnidirectional dynamic vibration absorber is provided in the inside of the grip in order to effectively attenuate vibrations in the grip. is there.
According to a third aspect of the present invention, in the configuration of the first or second aspect , in order to further improve the usability, the grip is arranged at a first position parallel to the tangential axis on the side of the main body, It is possible to change to a second position parallel to the axis below the main body.
In order to achieve the above object, an invention according to claim 4 is a striking tool in which a striking tool side handle according to any one of claims 1 to 3 is attached to a main body having a striking mechanism. It is what you did.

According to invention of Claim 1 and 4 , the position adjustment of the grip in the hit | damage axis direction is attained, and it is excellent in usability. In addition, since the handle portion can be rotated around the tangential axis on the side of the main body, for example, when the hammer drill is operated in the drill mode, the reaction force around the axis is applied to the main body as the bit rotates. Even if it is added to the handle, there is no risk that the handle will rotate accidentally, and the reliability at the time of mounting will be improved.
In addition , the use of the vibration-proof mechanism prevents a large vibration from being transmitted to the hand holding the grip and improves the feeling of use.
Furthermore , a vibration isolation mechanism that generates a damping force in the rotation direction of the handle portion can be configured compactly inside the handle portion.
According to the second aspect of the present invention, in addition to the effect of the first aspect , the vibration at the grip is effectively damped by adopting the dynamic vibration absorber.
According to the third aspect of the present invention, in addition to the effect of the first or second aspect, even with one grip, the gripping position can be changed in accordance with the use form of the impact tool, and the usability is further improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Form 1]
FIG. 1 is a cross-sectional view seen from the front showing an example of a side handle for a striking tool (hereinafter simply referred to as “side handle”). The side handle 1 is mounted on a main body T of a hammer drill as a striking tool. And a handle portion 4 connected to the mounting portion 2 via a bolt 3.
First, the mounting portion 2 is formed by connecting one ends of strip-shaped clamp plates 5 and 5 formed in a semicircular shape so as to be rotatable by pins 6, and a cylindrical connection body 7 is connected to the other end of each clamp plate 5. However, they are connected to each other so as to face each other.
In FIG. 1, a cap 8 through which the bolt 3 passes is disposed above the upper connecting body 7. As shown in FIG. 2 (A), the cap 8 has a regular hexagonal recess 10 which is provided with a regular hexagonal protrusion 9 projecting from the outer surface of the connecting body 7 and fitted to the inner surface to prevent rotation, and is recessed from the outer surface. The bolt 3 is prevented from rotating by fitting the head 11 of the bolt 3 to the head.

  An engagement piece 12 is disposed below the lower connecting body 7. The engagement piece 12 has a ring shape penetrating the bolt 3, and chevron-shaped engagement claws 13, 13... Whose ridgeline extends radially from the through hole of the bolt 3 on the front and rear surfaces in the axial direction. Projected at regular intervals. .. Are also formed on the outer surface of the connecting body 7. When the connecting body 7 and the engaging piece 12 are in contact with each other, the engaging claws 13 and 14 are engaged with each other. Thus, mutual rotation around the bolt 3 can be restricted.

  On the other hand, the handle portion 4 includes a connecting cylinder 15 connected to the mounting portion 2 via the bolt 3 and an L-shaped grip 16 connected to the connecting cylinder 15. The connecting cylinder 15 has a double structure of an inner cylinder 17 through which the bolt 3 passes and an outer cylinder 18 that is rotatably mounted on the inner cylinder 17 and has a grip 16 on the outer periphery. The inner cylinder 17 has a disk part 19 having the same diameter as the engaging piece 12 at one end, and a cylindrical part 20 that protrudes coaxially to the engaging piece 12 is provided on the outer surface of the disk part 19. In addition, engaging claws 21, 21,... Similar to the engaging piece 12 are formed around the cylindrical portion 20. At the other end of the inner cylinder 17, similarly to the disk part 19, a cap-shaped disk body 22 in which a cylinder part 23 and an engaging claw 24 are formed on the outer surface is disposed by fitting the irregularities. The bolt 3 penetrates the cap 8, the coupling bodies 7 and 7, the engagement piece 12, the inner cylinder 17, and the disk body 22 from above, and projects a screw portion 25 downward. A screw 26 is provided on the screw portion 25. The nut 27 incorporated in is screwed together.

  The outer cylinder 18 is between the disk portion 19 and the disk body 22 of the inner cylinder 17 and is restricted from moving in the axial direction, and a vibration isolation mechanism 28 is provided between the outer cylinder 18 and the inner cylinder 17. As shown in FIG. 2 (B), the vibration isolating mechanism 28 is provided with a plurality of elastic rods 29, 29,. The groove 30 is arranged at equal intervals in the circumferential direction by being fitted between the groove 30 and the groove 31 that is recessed in the axial direction on the inner surface of the outer cylinder 18. Therefore, the outer cylinder 18 is integrally and elastically connected to the inner cylinder 17 via the elastic rod 29 in the rotation direction.

  On the other hand, the grip 16 has a cylindrical shape in which a portion parallel to the connecting cylinder 15 is open at both ends, and a shaft-shaped mass body 33 and spherical balls disposed at both ends of the mass body 33 are included therein. A dynamic vibration absorber 32 composed of elastic bodies 34 is accommodated. Both ends of the cylindrical portion are closed by screwing the upper and lower lids 35, 35, and an elastic body is provided between the hemispherical concave portions 36, 36 respectively recessed on the opposed surfaces of the lid 35 and the end surface of the mass body 33. By interposing 34, the mass body 33 is elastically supported in the grip 16. Reference numeral 37 denotes a cover made of an elastic material attached to the outer periphery of the grip 16.

In the side handle 1 configured as described above, when the knob 26 is loosened and the gap between the cap 8 is opened in the state shown in FIG. 1, the coupling bodies 7 and 7 extend along the bolt 3 between the cap 8 and the knob 26. Therefore, if it moves so that the space | interval of the coupling bodies 7 and 7 may be expanded, the space | interval of the clamp plates 5 and 5 will also open, and the internal diameter of the mounting part 2 will expand. Therefore, the main body T of the hammer drill can be inserted into the mounting portion 2.
When the knob 26 is rotated in the screwing direction from here, the gap between the cap 8 and the knob 26 is contracted, and the interval between the clamp plates 5 and 5 together with the coupling bodies 7 and 7 is also contracted, and the inner diameter of the mounting portion 2 is contracted. Therefore, the mounting portion 2 is fixed to the main body T. At the same time, since the engaging piece 12 and the inner cylinder 17 of the handle portion 4 are also pressed toward the connecting body 7, the connecting body 7, the engaging piece 12, the inner cylinder 17, and the disk body 22 are engaged with adjacent members. The handle 4 is fixed at a first position where the grip 16 is parallel to the bolt 3 on the side of the main body T.

In this state, the operator can support the hammer drill by holding the main handle behind the hammer drill with one hand and holding the grip 16 of the side handle 1 with the other hand. Therefore, the operability when performing a chiseling operation or the like is improved.
When the position of the grip 16 is to be adjusted in the front-rear direction, the handle portion 4 is centered on the bolt 3 by loosening the knob 26 and releasing the engagement between the inner cylinder 17 and the engagement piece 12. Can be rotated as Therefore, the grip 16 can be moved in the front-rear direction on the circumference around the bolt 3. If an arbitrary front / rear position is selected and the knob 26 is screwed in, the grip 16 is fixed at the position, and gripping at an easy-to-use position becomes possible.

  On the other hand, when used as a hammer drill or a drill, the handle portion 4 can be removed from the bolt 3 by loosening the knob 26 and removing it from the bolt 3. Therefore, when the removed handle portion 4 is turned upside down and the connecting cylinder 15 and the disk body 22 are mounted on the bolt 3 again and the knob 26 is screwed in, the surface perpendicular to the striking axis of the main body T as shown in FIG. On the upper side, the grip 16 is fixed on the lower side of the main body T at a second position parallel to the bolt 3. Here, if it is desired to change the front-rear direction, the grip 16 may be rotated and moved in the front-rear direction before the knob 26 is screwed, and the position directly below the main body T can be selected. Therefore, also in this case, the grip 16 can be fixed at the selected position, and gripping at an easy-to-use position becomes possible.

  In any mode of the hammer drill, the vibration generated by the hammer drill is suppressed from being transmitted to the grip 16 side by the vibration isolation mechanism 28 between the inner cylinder 17 and the outer cylinder 18 in the handle portion 4. The vibration absorber 32 in the grip 16 is effectively damped. Therefore, a large vibration is not transmitted to the hand holding the grip 16 and the feeling of use is also improved.

  Thus, according to the side handle 1 and hammer drill of the said form 1, the handle | steering-wheel part 4 was connected so that it could rotate to the mounting part 2 centering | focusing on the volt | bolt 3 orthogonal to a striking axis | shaft, and fixed in arbitrary rotation positions. As a result, the position of the grip 16 can be adjusted in the direction of the striking axis, which is easy to use. Further, since the handle portion 4 can rotate around the bolt 3 on the side of the main body T, when working in the drill mode, a reaction force around the axis is applied to the main handle T on the side handle 1 as the bit rotates. However, there is no possibility that the knob 26 is loosened and the handle portion 4 is accidentally rotated, and the reliability at the time of mounting is increased.

In particular, here, the handle portion 4 is provided with a vibration isolation mechanism 28 that reduces vibration transmitted from the mounting portion 2 to the handle portion 4, so that a large vibration is not transmitted to the hand holding the grip 16, and the feeling of use is improved. It becomes good.
In addition, a connecting portion of the handle portion 4 to the mounting portion 2 is connected to the inner tube 17 connected to the mounting portion 2, and an outer tube 18 that is coaxially mounted on the inner tube 17 and has a grip 16 on the outer periphery. The anti-vibration mechanism 28 is configured so as to straddle between the concave grooves 30 and 31 formed in the axial direction on the outer surface of the inner cylinder 17 and the inner surface of the outer cylinder 18, and between both the concave grooves 30 and 31. Since the shaft-like elastic rod 29 is formed, the vibration-proof mechanism 28 that generates a damping force in the rotation direction of the handle portion 4 can be configured compactly inside the handle portion 4.
Furthermore, by providing the omnidirectional dynamic vibration absorber 32 inside the grip 16, the vibration in the grip 16 is more effectively damped.

  In addition, the grip 16 can be changed between a first position parallel to the bolt 3 on the side of the main body T and a second position parallel to the bolt 3 below the main body T. When using in the mode, select the first position, when using in the hammer drill or drill mode, select the second position, etc. Even one grip 16 grips according to the usage pattern of the hammer drill The position can be changed to improve usability.

Next, another embodiment will be described. In addition, the same code | symbol is attached | subjected to the same structure part as the form 1, and the overlapping description is abbreviate | omitted.
[Form 2]
The side handle 1 a shown in FIG. 4 is different from the first embodiment in the structure of the handle portion 4. First, the connecting portion 40 to the bolt 3 is provided with a cylindrical portion 20 through which the bolt 3 penetrates and an engaging claw 21 around the cylindrical portion 20 at the upper and lower ends, respectively, and an outer wall portion having a U-shaped cross section that opens an intermediate portion toward the grip 16 side. 41 and an inner wall 42 that penetrates the bolt 3 in the outer wall 41 and is connected to the grip 16 (FIGS. 5A and 5B). Further, both ends of the lower portion of the outer wall portion 41 are extended portions 43, 43 that protrude toward the grip 16 along the intermediate wall portion 42, and between the extended portion 43 and the intermediate wall portion 42. An anti-vibration mechanism 44 is provided.

  The anti-vibration mechanism 44 includes concave portions 45 and 45 that are respectively provided on opposite surfaces of the extending portion 43 and the middle wall portion 42, and a pair of shock absorbers that are fitted across the concave portions 45 and 45. It consists of a body 46. The shock absorber 46 is made of rubber having a rectangular front view, and has a groove 47 in the vertical direction in the center of both front and rear surfaces. The horizontal cross-sectional shape is continuous between two circles between adjacent edges. It has become a dharma. The grip 16 here is not provided with a dynamic vibration absorber as in the first mode.

Even when the side handle 1a configured as described above is used as a hammer, as shown in FIG. 4, if the grip 16 is fixed at the first position facing upward on the side of the main body T, a chipping operation or the like can be performed. The operability when performing is good. Further, if the knob 26 is loosened and the handle portion 4 is rotated around the bolt 3, the position of the grip 16 can be adjusted in the front-rear direction.
On the other hand, when using as a hammer drill or a drill, the handle 16 is removed by loosening the knob 26, and the handle 16 is turned upside down and connected to the bolt 3 again. The position can be changed, and the adjustment in the front-rear direction is also possible. Therefore, for example, as shown in FIG. 6, the grip 16 can be fixed in front of the bolt 3 by rotating the handle portion 4 forward 90 ° from the second position.

  In any mode of the hammer drill, the vibration generated by the hammer drill is suppressed by the buffer body 46 between the extending portion 43 and the inner wall portion 42 of the vibration isolating mechanism 44 of the handle portion 4. The vibration transmitted to 16 is reduced and the usability is also improved.

Thus, also in the side handle 1a of the said form 2, the position adjustment of the grip 16 in a hit | damage axis direction is attained, and it is excellent in usability. Further, there is no possibility that the knob 26 is loosened and the handle portion 4 is accidentally rotated, and the reliability at the time of mounting is increased.
Furthermore, the effects of reducing vibrations by adopting the vibration isolating mechanism 44 and improving usability by changing the position of the grip 16 can be obtained as in the first embodiment. In particular, here, since the vibration isolating mechanism 44 is formed by a pair of buffer bodies 46 between the extending portion 43 and the inner wall portion 42, the vibration isolating mechanism is configured more simply than in the first mode using the elastic rod. There are advantages you can do.

  In the second embodiment, as shown in FIG. 7, a hook 48 can be interposed between the connecting portion 40 of the handle portion 4 and the knob 26. That is, if the concave portion 49 and the engaging claw 50 into which the tube portion 20 is fitted are formed in the base end portion through which the bolt 3 passes, the hook 48 is held in an upward posture simultaneously with the fixing of the handle portion 4 by screwing the knob 26. Can be fixed. Of course, when the knob 26 is loosened, it can be adjusted to an arbitrary angle in the horizontal direction, and hooks can be adopted in other forms such as form 1. This hook can be used for various applications such as hanging storage of the side handle itself and holding a dust collecting hose connected to the tip of the main body.

[Form 3]
In the side handle 1 b shown in FIG. 8, the grip 16 a in the handle portion 4 is separated from the inner wall portion 42 of the connecting portion 40, and is separated from the second engagement piece 12 a, the base end portion 51, and the grip portion 52. Formed and connected to the middle wall portion 42 by a second bolt 53 orthogonal to the bolt 3. The second bolt 53 is provided outward in a non-rotating state in which the head is fitted in the hexagonal hole 54 provided in the middle wall portion 42.
First, the second engagement piece 12a has the engagement claws 13 on both the front and rear surfaces in the axial direction similarly to the engagement piece 12, and can be engaged with the engagement claws 55 on the adjacent middle wall portion 42 side. . As shown in FIG. 9A, the base end portion 51 has a cylindrical portion 56 through which the second bolt 53 passes and an engaging claw 57 on the left and right end surfaces, respectively, and an intermediate portion is opened to the gripping portion 52 side. The end portion of the grip portion 52 is penetrated by the second bolt 53 in the base end portion 51. Further, between the base end portion 51 and the grip portion 52, as shown in FIG. 9 (B), concave portions 59, 59 that are recessed in the mutually opposing surfaces of the base end portion 51 and the grip portion 52, An anti-vibration mechanism 58 is provided that includes a second shock absorber 60 that fits between the concave portions 59 and 59. The second buffer body 60 is made of rubber having a rectangular front view and an oval cross section. Here, the buffer body 46a in the vibration isolating mechanism 44 on the side of the middle wall portion 42 also has an oval cross section. . A nut 62 incorporated in the second knob 61 is screwed into the tip of the second bolt 53 that passes through the base end portion 51.

In the side handle 1b configured as described above, the grip portion 52 and the base end portion 51 can rotate around the second bolt 53, and can be arbitrarily set by screwing and loosening the second knob 61 to the second bolt 53. It can be fixed at the rotational position.
Therefore, when used as a hammer, as shown in FIG. 8, if the base end 51 is fixed as the first position where the grip 52 is facing upward on the side of the main body T, an operation for performing a chipping operation or the like is performed. Property is improved. Further, if the knob 26 is loosened and the handle portion 4 is rotated around the bolt 3, the position of the grip portion 52 can be adjusted in the front-rear direction.
On the other hand, when used as a hammer drill or a drill, if the second knob 61 is loosened, the base end 51 and the grip 52 are rotated downward, and the second knob 61 is screwed and fixed again, as shown in FIG. In addition, the grip 16a is fixed at a second position facing downward on the lower side of the main body T, and adjustment in the front-rear direction by operating the knob 26 is also possible.

Further, here, the grip portion 52 is penetrated by the second bolt 53 separately from the base end portion 51, and the grip portion 52 has an L-shape in which the grip portion is located at the end of the penetrating portion of the second bolt 53. Therefore, the second knob 61 is removed from the second bolt 53, the base end portion 51 and the grip portion 52 are removed from the second bolt 53, and the base end portion 51 is again turned with the orientation of the grip portion 52 reversed left and right. As shown in a two-dot chain line in FIG. 10, the grip portion 52 can be changed to a position closer to the main body T. The same applies when used as a hammer. Of course, the position may be changed by exchanging the gripper itself.
In any mode of the hammer drill, vibration generated by the hammer drill is reduced by the buffer body 46a in the vibration isolation mechanism 44 and the second buffer body 60 in the vibration isolation mechanism 58. The transmitted vibration is effectively attenuated, so that a large vibration is not transmitted to the hand gripping the grip portion 52, and the feeling of use is improved.

Thus, also in the side handle 1b according to the third aspect, the position of the grip 16a in the striking axis direction can be adjusted, and the usability is excellent. Further, there is no possibility that the knob 26 is loosened and the handle portion 4 is accidentally rotated, and the reliability at the time of mounting is increased.
Furthermore, effects such as vibration reduction by adopting the vibration isolation mechanisms 44 and 58 and improvement in usability by changing the position of the grip 16a can be obtained as in the first embodiment. In particular, here, if the base end 51 and the grip 52 are rotated by the second knob 61, the position of the grip 16a can be easily changed, so there is no need to remove the handle as in the first and second embodiments. There is an advantage that the operation related to the change becomes easy. Further, a finer grip position can be selected by changing the position of the grip portion 52 in the left-right direction.

[Form 4]
In the side handle 1c shown in FIG. 11, the shape of the grip 16b in the handle portion 4 is not L-shaped, and a base end portion 63 projecting from the lower end of the outer cylinder 18 to the side at right angles, and the base end portion 63 It has an inverted T-shape that is orthogonally connected to the tip and forms an upper grip portion 64 and a lower grip portion 65 in the vertical direction. Reference numeral 66 denotes a stopper protruding from the upper end of the upper gripping portion 64 toward the main body T side.
Therefore, according to this side handle 1c, when used as a hammer, the upper gripping portion 64 can be gripped to perform a chipping operation or the like, and when used as a hammer drill or drill, the lower gripping portion 65 is gripped. Thus, a drilling operation or the like can be performed. In any case, if the handle 26 is loosened and the handle portion 4 is rotated around the bolt 3, adjustment in the front-rear direction is possible.

Thus, also in the side handle 1c of the said form 4, the position adjustment of the grip 16b in a hit | damage axis direction is attained, and it is excellent in usability. Further, there is no possibility that the knob 26 is loosened and the handle portion 4 is accidentally rotated, and the reliability at the time of mounting is increased.
Furthermore, the vibration reduction effect by adopting the vibration isolation mechanism 28 can be obtained as in the first embodiment. In particular, here, the grip 16b has a T-shape having a grip portion at the top and bottom, so that it is sufficient to change only the grip position in accordance with the use mode, and there is an advantage that it is not necessary to change the position of the grip 16b.

[Form 5]
In the side handle 1d shown in FIG. 12, the shape of the grip 16b of the handle part 4 is such that the connecting part 67 is connected to the outer cylinder 18 and extends upward in parallel with the bolt 3, and from the upper end of the connecting part 67 to the outside. A horizontal portion 68 that extends horizontally and a gripping portion 69 that extends downward from the tip of the horizontal portion 68 beyond the knob 26 and in parallel with the bolt 3, the connecting portion 67 is connected to the connecting cylinder 15 and the gripping portion 69 in plan view. It is in the shape of a letter to be located behind.
Therefore, according to the side handle 1d, when used as a hammer, the upper side of the gripping portion 69 can be gripped to perform a chipping operation or the like, and when used as a hammer drill or drill, The side can be gripped for drilling operations and the like. Further, if the knob 26 is loosened and the handle portion 4 is rotated around the bolt 3, adjustment in the front-rear direction is possible.

Thus, also in the side handle 1d according to the fifth aspect, the position of the grip 16b in the striking axis direction can be adjusted, and the usability is excellent. Further, there is no possibility that the knob 26 is loosened and the handle portion 4 is accidentally rotated, and the reliability at the time of mounting is increased.
Furthermore, the vibration reduction effect by adopting the vibration isolation mechanism 28 can be obtained as in the first embodiment. Particularly here, the grip 16b has a shape having a vertically long grip portion. Therefore, it is sufficient to change only the grip position in accordance with the use mode, and there is an advantage that it is not necessary to change the position of the grip 16b.

In addition, in common with each form, the form of a mounting part and a handle is not restricted to the said content, For example, the position of a knob is provided upside down, an engagement piece is abbreviate | omitted, and one connection body and a handle part are directly connected. It is possible to change the design such as engaging between the engaging claws. In addition, as for the vibration isolating mechanism, the anti-vibration mechanism of the form 1 can be adopted in the forms 2 and 3, or the anti-vibration mechanism of the form 2 can be adopted in the form 1. Of course, the vibration isolation mechanism can be omitted. Further, the dynamic vibration absorber may be omitted in the first form, or may be installed in the grip after the second form.
On the other hand, in the third aspect, the grip portion can be separated from the base end portion so that the position of the grip can be changed in the left-right direction. However, the grip portion can be formed integrally with the base end portion.
In addition, it is possible to change the design as appropriate, such as reversing the position of the handle portion with respect to the mounting portion, or setting the tangential axis to either the top or bottom of the main body and connecting the handle portion to the top or bottom of the main body.

It is explanatory drawing of the side handle of form 1 (hammer position). (A) is an AA line sectional view, (B) is a BB line sectional view. It is explanatory drawing of the side handle of form 1 (position for hammer drills). It is explanatory drawing of the side handle of form 2 (hammer position). (A) is a CC line sectional view, (B) is a DD line sectional view. It is explanatory drawing (position for hammer drills) of the side handle of form 2, (A) shows a plane, (B) shows a side, and (C) shows a front. It is explanatory drawing of the side handle of the form 2 which provided the hook. It is explanatory drawing of the side handle of form 3 (hammer position). (A) is a sectional view taken along line EE, and (B) is a sectional view taken along line FF. It is explanatory drawing of the side handle of form 3 (position for hammer drills). It is explanatory drawing of the side handle of form 4. It is explanatory drawing of the side handle of form 5, (A) shows a plane and (B) shows a front, respectively.

Explanation of symbols

  1, 1a to 1d ··· impact tool side handle, 2 ·· mounting portion, 3 · bolt, 4 ·· handle portion, 7 ·· coupling body, 8 ·· cap, 12, 12a ·· engagement piece, 15 ·· Connection cylinder, 16, 16a, 16b ··· Grip, 17 · · Inner tube, 18 · · Outer tube, 26 · · Knob, 28, 44, 58 · · Anti-vibration mechanism, 29 · · Elastic rod, 32 .. Dynamic vibration absorber, 33 .. Mass body, 34 .. Elastic body, 40 .. Connection portion, 41 .. Outer wall portion, 42 .. Middle wall portion, 46 .. Buffer body, 51, 63. .., 52, 69 .. gripping part, 53 .. second bolt, 60 .. second buffer body, 61 .. second knob, T.

Claims (4)

A mounting portion mounted on a main body of a hitting tool having a striking mechanism; a handle portion connected to the mounting portion and projecting from the mounting portion on a surface perpendicular to the hitting axis of the main body; and provided with a grip. It is a side handle for a hitting tool,
The handle portion is connected to the mounting portion so as to be rotatable around an axis in a tangential direction of the main body perpendicular to the striking axis and fixed at an arbitrary rotational position ,
The handle portion is provided with an anti-vibration mechanism that reduces vibration transmitted from the mounting portion to the handle portion,
The connecting portion of the handle portion with the mounting portion is divided into an inner cylinder connected to the mounting portion, and an outer cylinder coaxially and externally mounted on the inner cylinder, and the grip is continuously provided on the outer periphery, An anti-vibration mechanism is fitted across the groove formed in the axial direction on the outer surface of the inner cylinder and the inner surface of the outer cylinder, and between the groove on the inner cylinder and the groove on the outer cylinder. A side handle for an impact tool, characterized in that it is formed of a shaft-like elastic body . The side handle for an impact tool according to claim 1, wherein an omnidirectional dynamic vibration absorber is provided inside the grip. The grip can be changed between a first position parallel to the tangential axis on the side of the main body and a second position parallel to the axis below the main body. The side handle for an impact tool according to claim 1 or 2 . A body which internally provided a striking mechanism, the striking tool is formed by mounting the side handle for impact tool according to any one of claims 1 to 3.

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